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Must To Know Top 10 Benefits Of Glutamine
Madhura MohanJust like carbohydrates and fats, protein is an essential macronutrient required in bulk. The key difference is that unlike carbohydrates and fats, our body doesn’t store extra protein — which is why protein supplementation deserves more attention.
Amino acids are the building blocks of proteins and we get most of them from our diet. Yet it is very hard to meet individual amino acid needs from food alone. There are 20 amino acids and we need all of them — every one plays a crucial role in the proper functioning of the body. For instance, arginine is required for energy production, leucine promotes energy metabolism, and beta-alanine increases muscle endurance. Dairy and meat supply all 9 essential amino acids.
What About the Non-Essential Amino Acids?
We’ve long known that non-essential amino acids are synthesised in the human body, so they need not be taken through the diet. But how far is this statement really true?
Is Non-Essential Also Essential?
The simple answer is yes. The term ‘non-essential amino acid’ only means it need not be taken through diet because it already exists in the body — not that it is unimportant. Yet we are often misled into disregarding non-essential amino acids entirely.
Glutamine is one such amino acid whose value has long been underestimated.
Also Read: BCAA Vs Glutamine — Which Amino Acid To Choose?
The Primary Store of Glutamine Is Our Muscle
Glutamine is the most abundant amino acid in the body, accounting for 60% of the skeletal muscle amino acid pool. As with every amino acid — essential or non-essential — optimum levels are critical. Though our body synthesises glutamine, we need to ensure we maintain enough of it.
The Inconspicuous Need for L-Glutamine
Because glutamine constitutes the highest portion of the muscle amino acid pool, it is required in particularly large amounts to repair and rebuild muscle tissue. Muscles get damaged through daily activity and intense training — and muscle growth is hindered when muscle protein breakdown exceeds muscle protein synthesis. A targeted intake of Glutamine can undo this damage.
Top 10 Benefits of Glutamine
1. Prevents Muscle Wasting
During prolonged exercise, serious illness, surgery, or trauma, glutamine levels in the blood deplete. The body may not produce enough and begins breaking down protein stores to release more — promoting the wasting of muscle tissue. Glutamine supplementation helps correct this imbalance.
2. Reduces Cortisol-Induced Muscle Breakdown
Athletes and gymgoers who train strenuously typically have low glutamine levels and elevated cortisol — a catabolic stress hormone that breaks down muscle protein. Increased glutamine intake helps counter this cortisol-induced breakdown.
3. Boosts Natural Growth Hormone
Glutamine stimulates the production of natural growth hormone. Studies have shown a four-fold increase in growth hormone in people supplemented with glutamine.
4. Supports Gut Health
Glutamine maintains the structural integrity of the intestinal lining. Improved gut permeability promotes effective detoxification and nutrient absorption.
5. Stabilises Blood Sugar
Glutamine acts as an emergency energy source when blood glucose falls too low, helping to stabilise blood sugar levels and minimise sugar cravings.
6. Replenishes Glycogen Levels
Glutamine increases the activity of the enzyme responsible for creating glycogen in muscle and liver cells, helping to restore energy reserves after training.
7. Supports Immune Function
Immune cells cannot create glutamine themselves. Without sufficient glutamine, the immune system begins to break down — making adequate levels particularly important during high-volume training.
8. Protects Cell Division
As a precursor of DNA and RNA, glutamine depletion directly affects the cell division process — impacting recovery and tissue repair at a cellular level.
9. Produces Key Antioxidant Compounds
Glutamine prepares important compounds including L-glutamate and the powerful antioxidant glutathione, which protects cells from oxidative stress.
10. Reduces NSAID Damage
Glutamine can help reduce damage caused by non-steroidal anti-inflammatory drugs (NSAIDs), which are commonly used for pain and recovery.
These are just a few of the benefits glutamine offers — the list goes on. Upon considering the countless functions of this amino acid, you would no longer call it non-essential. Call it a multi-tasker instead.
Frequently Asked Questions
What is glutamine and why is it important?
The most abundant free amino acid in the body (60% of muscle amino acid content). Critical for immune function, gut integrity, protein synthesis, glycogen synthesis, and nitrogen balance. Demand can exceed production during intense training.
Does glutamine build muscle?
It is conditionally essential during physical stress. Glutamine supports muscle protein synthesis indirectly via nitrogen balance and cell volumisation. While direct evidence for measurably greater muscle mass beyond adequate total protein is limited, it aids the conditions required for muscle building.
What are the main benefits for athletes?
Immune function maintenance, gut barrier integrity, recovery support, glycogen resynthesis, nitrogen balance during caloric restriction, and reduced overtraining risk during high-volume training blocks.
When should I take glutamine?
Post-workout is the most evidence-supported timing for recovery and glycogen replenishment. Pre-sleep dosing is also used for overnight muscle preservation. Typical dose: 5–10g.
Is glutamine safe to take daily?
Yes. It is the most abundant dietary and endogenous amino acid. 5–10g daily is well-tolerated, and up to 40g/day has been studied clinically without significant adverse effects.
Don’t simply admire its benefits — let glutamine supplementation work for you.
Also Read: Get Optimal Results of Muscle Gains With Whey & Glutamine
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